World's largest solar bridge opens in London.

Business Green: “After nearly five years in the making, Network Rail has today cut the ribbon on the world’s largest solar-powered bridge at Blackfriars Bridge across the River Thames.”“As part of a project with solar installation firm Solarcentury, the roof of the bridge has been covered with 4,400 photovoltaic panels, providing up to half of the energy for London Blackfriars station.
First Capital Connect, which runs Blackfriars, expects the panels to cut the stations’ carbon emissions by an estimated 511 tonnes a year.”